Home / 139,783.20-192,903.12-76,122.24

Finding the Fourth Proportional to 139,783.20, 192,903.12 and 76,122.24

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Solution

The fourth proportional to 139,783.20, 192,903.12 and 76,122.24 is: 105,049.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,783.20 : 192,903.12 = 76,122.24 : x
  2. Step 2: Convert to fraction form
    139,783.20/192,903.12 = 76,122.24/x
  3. Step 3: Cross multiply
    139,783.20x = 192,903.12 × 76,122.24
  4. Step 4: Simplify right side
    139,783.20x = 14,684,217,597.39
  5. Step 5: Solve for x
    x = 14,684,217,597.39/139,783.20
  6. Step 6: Final answer
    x = 105,049.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.